Mitochondrial unfolded-protein response (Caenorhabditis elegans)

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Bibliography

1. Broadley SA, Hartl FU; ''Mitochondrial stress signaling: a pathway unfolds.''; Trends Cell Biol, 2008 PubMed Europe PMC Scholia
2. Haynes CM, Ron D; ''The mitochondrial UPR - protecting organelle protein homeostasis.''; J Cell Sci, 2010 PubMed Europe PMC Scholia
3. Pellegrino MW, Nargund AM, Haynes CM; ''Signaling the mitochondrial unfolded protein response.''; Biochim Biophys Acta, 2013 PubMed Europe PMC Scholia
4. Haynes CM, Petrova K, Benedetti C, Yang Y, Ron D; ''ClpP mediates activation of a mitochondrial unfolded protein response in C. elegans.''; Dev Cell, 2007 PubMed Europe PMC Scholia
5. Yoneda T, Benedetti C, Urano F, Clark SG, Harding HP, Ron D; ''Compartment-specific perturbation of protein handling activates genes encoding mitochondrial chaperones.''; J Cell Sci, 2004 PubMed Europe PMC Scholia
6. Baker BM, Nargund AM, Sun T, Haynes CM; ''Protective coupling of mitochondrial function and protein synthesis via the eIF2α kinase GCN-2.''; PLoS Genet, 2012 PubMed Europe PMC Scholia
7. Haynes CM, Yang Y, Blais SP, Neubert TA, Ron D; ''The matrix peptide exporter HAF-1 signals a mitochondrial UPR by activating the transcription factor ZC376.7 in C. elegans.''; Mol Cell, 2010 PubMed Europe PMC Scholia
8. Nargund AM, Pellegrino MW, Fiorese CJ, Baker BM, Haynes CM; ''Mitochondrial import efficiency of ATFS-1 regulates mitochondrial UPR activation.''; Science, 2012 PubMed Europe PMC Scholia
9. Benedetti C, Haynes CM, Yang Y, Harding HP, Ron D; ''Ubiquitin-like protein 5 positively regulates chaperone gene expression in the mitochondrial unfolded protein response.''; Genetics, 2006 PubMed Europe PMC Scholia

History

External references

DataNodes

Name	Type	Database reference	Comment
ATFS-1 Fragments	Metabolite	CHEBI:16670 (ChEBI)
ATFS-1	Protein	WBGene00013878 (Ensembl)
CLPP-1	Protein	WBGene00014172 (Ensembl)
ClpX-likeProtease/(D2030.2)	GeneProduct	WBGene00008412 (Ensembl)
ClpX-likeProtease/(K07A3.3)	GeneProduct	WBGene00019461 (Ensembl)
DVE-1	GeneProduct	WBGene00022861 (Ensembl)
Ethidium Bromide	Metabolite	CHEBI:4883 (ChEBI)
GCN-2	Protein	WBGene00013591 (Ensembl)
GSP-1	GeneProduct	WBGene00001747 (Ensembl)	gsp-1 encodes a protein phosphatase homologous to the yeast phosphatase required for eIF2-alpha dephosphorylation.
HAF-1	Protein	WBGene00001811 (Ensembl)	haf-1, a gene encoding a mitochondria-localized ATP-binding cassestte protein, is required for signaling within the mitochondrial unfolded protein response (UPTmt) and for coping with misfolded protein stress. Peptide efflux from isolated mitochondria was ATP dependent and required HAF-1 and the protease ClpP.
HSP-60	Protein	WBGene00002025 (Ensembl)
HSP-6	Protein	WBGene00002010 (Ensembl)
Lon Protease/ C34B2.6	GeneProduct	WBGene00016391 (Ensembl)
PHB-2	Protein	WBGene00004015 (Ensembl)	PHB-2, along with PHB-1, forms the mitochondrial inner membrane Prohibitin complex which is implicated in assembly of components of the respiratory chain.
Paraquat	Metabolite	CHEBI:34905 (ChEBI)
Protein Fragments	Metabolite	CHEBI:16670 (ChEBI)
SPG-7	Protein	WBGene00004978 (Ensembl)
TIMM-23	GeneProduct	173041 (Entrez Gene)
TOMM-40	Protein	WBGene00007686 (Ensembl)
UBL-5	Protein	WBGene00006726 (Ensembl)
Unfolded Proteins	Protein
dnj-10	GeneProduct	WBGene00001028 (Ensembl)
eIF2-alpha(Y37E3.10)	GeneProduct	WBGene00021351 (Ensembl)
hsp-60	GeneProduct	WBGene00002025 (Ensembl)
hsp-6	GeneProduct	WBGene00002010 (Ensembl)
translation	Pathway	GO:0006412 (GeneOntology)

Annotated Interactions

Source	Target	Type	Database reference	Comment
		mim-stimulation	WBInteraction000520482 (WormBase)	Activation of the UPRmt correlates with enhanced binding of DVE-1 to the promoters of mitochondrial chaperone genes. DVE-1 was found to bind the hsp-6 and hsp-60 gene promoters by Chromatin ImmunoPrecipitation (ChIP). ubl-5 RNAi results in diminished expression of an hsp-6::GFP reporter and endogenous hsp-6. dve-1 RNAi also disrupts induction of endogenous hsp-6 expression induced by spg-7 RNAi, as determined by QRT-PCR. RNAi knockdown of dve-1 prevents expression of a Phsp-60::GFP reporter transgene in response to the zc32 allele at 25 degrees Celsius, spg-7 RNAi, or exposure to Ethidium Bromide (all known to induce UPRmt and, hence, hsp-60 expression). dve-1 RNAi also disrupts induction of endogenous hsp-60 expression induced by spg-7 RNAi, as determined by QRT-PCR. ubl-5 RNAi results in diminished expression of an hsp-60::GFP reporter and endogenous hsp-60.